jeppen wrote:
Do I need to go into further detail since cat #0 is the lowest category?
Yes, dont make assumptions, as K. Engholm mentioned the lower fault currents may cause an increase in Ei, but in a 480V system they can and will still be high enough to be self sustaining. If you are looking for a cutoff point use the IEEE 1584 cutoff.
jeppen wrote:
Can I assume this for the other 4 branches of switchgear?
Not at all, the systems are most likely not the same (Loads, Z, motors, setings, etc..) so the Ei's will be different in most cases. Anyone can come in and make assumptions, be an engineer!
jeppen wrote:
As far as labeling these cat #0 locations will a generic label suffice? Thanks for helping a new engineer!
Today, yes, by the time you finish this project and install the labels, no. The 2009 70E, due out in Oct 2008 (I will believe that when I see it) will have minimum info required on the labels over and above the current NFPA 70 requirements. Either the PPE required or the Ei will need to be on the labels.